| Autor: |
M, Zwiebler, E, Di Gennaro, J E, Hamann-Borrero, T, Ritschel, R J, Green, G A, Sawatzky, E, Schierle, E, Weschke, A, Leo, F Miletto, Granozio, J, Geck |
| Rok vydání: |
2020 |
| Předmět: |
|
| Zdroj: |
Scientific Reports |
| ISSN: |
2045-2322 |
| Popis: |
We present a combined resonant soft X-ray reflectivity and electric transport study of \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\hbox {LaAlO}_3$$\end{document}LaAlO3/\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\hbox {SrTiO}_3$$\end{document}SrTiO3 field effect devices. The depth profiles with atomic layer resolution that are obtained from the resonant reflectivity reveal a pronounced temperature dependence of the two-dimensional electron liquid at the \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\hbox {LaAlO}_3$$\end{document}LaAlO3/\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\hbox {SrTiO}_3$$\end{document}SrTiO3 interface. At room temperature the corresponding electrons are located close to the interface, extending down to 4 unit cells into the \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\hbox {SrTiO}_3$$\end{document}SrTiO3 substrate. Upon cooling, however, these interface electrons assume a bimodal depth distribution: They spread out deeper into the \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\hbox {SrTiO}_3$$\end{document}SrTiO3 and split into two distinct parts, namely one close to the interface with a thickness of about 4 unit cells and another centered around 9 unit cells from the interface. The results are consistent with theoretical predictions based on oxygen vacancies at the surface of the \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\hbox {LaAlO}_3$$\end{document}LaAlO3 film and support the notion of a complex interplay between structural and electronic degrees of freedom. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
